Nut-lock



(Model.) i

C.v E. BE-LDING.

NUT LOCK.

No. 296,383. y 'Patented Apr. 8, 1884.

CHARLES E. BELDING, OF MALVERN, OHIO.

NUT-LOC K.

SPECIFICATION forming part of Letters Patent No. 296,383, dated April 8, 1884.

Application lcd January 3l, 1884. (Model.)

To @Zi whom t may concern.'

Be it known that I, CHARLES E. BELDING, of Malvern, in the county of Carroll and State of Ohio, have invented certain new and useful Improvements in Nut-Locks; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as Will enable others skilled inthe art to which it pertains to make and use it, reference being had to the accompanying drawings,which forni part of this specification.

My invention relates to an improvement in nut-locks; and it consists in the combination of the article which is to be clamped or fastcned, the bolt, the nut, and a key having a pronged end, the nut and the article to be clamped being provided with a groove or grooves to receive the key, and a suitable groove or seat extending around or partially around the bolt, so that the pronged end of the key can be expanded into them, as will be more fully described hereinafter.

flhe object of iny invention is to causethe pronged end of the key to expand or spread around thebolt, and thus prevent the key from being easily withdrawn.

Figure l is a vertical section. Fig. 2 is an inverted view ofthe nut. Fig. 3 is a perspective of the key. Fig. 4 is a pla-u view of my invention, showing the nut broken away innorder to show the position assumed by the key when driven into place. `Fig. 5 is a detached view of a Washer which is used in connection with the Wood-Work.

A represents the bolt, B au iron plate or article of any kind, and G the uut. /Vhere the nut is used upon the plate B, a suitable groove, F, is made in the face of the plate to receive the key D, and a suitable groove or number of grooves, G, is made in the inner face of the nut. There will be one groove G in the inner face of the nut for every side, so that the'nut can be more readily locked when screwed up into place. Only four sides are shown to the nut in this instance; but it is evident that the nut may have six, eight, or

- any number of sides, and there will then be a groove G for every side. The combined depth of the groove F in the plate and the groove in the inner face of the nut is just equal to the thickness of the key which is forced into these grooves for the purpose of locking the `nut in place. In both the plate and the nut, laround the opening through 1which the bolt passes, is also made a suitable groove or enlargement, I, into which the prongs of the in- 'ner end of the key entend as the key is driven inward. When the` key is forced into place, the pronged ends strike against the sides of the bolt, and then they spread outward around the sides of the bolt, as shown. As the ends become expanded, the key can only be removed by applying considerable force to the head, formed on its outer end for this special purpose. Vhen the nut is to be locked into place upon the wood or other material, instead of the plate, a Washer, J, Vwill be used. A groove will be formed in the outer face of the Washer, and in stamping this groove a corresponding ridge or projection is formed on its under face, which ridge or projection Will be made to catch in a suitable recess formed in the surface of the Wood, for the purpose of preventing thewasher from turning around. Vhet-her a Washer or a plate is used, the operation produced is exactly the saine. lVhe're the Washer is used, the recess to receive the prongs of the key, around the opening for the bolt to pass through, need not extend more than partially around.

The operation of the device is as follows: The nut is tightened on the bolt by means of a suitable Wrench, and turned until one of the grooves or key-seats in the nut is opposite the groove in the article to be held by the bolt, or a washer, and the forked end of the key is then inserted in the grooves in the nut and the plate or Washer. When the key is driven in-- ward, its forked end strikes against the bolt, and its ends are caused to separate and fdl the recesses around the hole in the nut and the article being clamped. This separation of the ends of the key prevents it from coming out, and thus effectually locks the nut on the bolt. Where the nut requires frequent tightening, the key will be made so as to spring into the grooves or key-seats and expand into the recess, and the key can be Withclrawn,\vhenever required, without injury to it. When the key is lWithdrawn, the grooves will force the ends of the key together until they can be ydrawn upward through the grooves.

Having thus described my invention, I claim- IOC In a nut-look, the combination of the bolt, In testimony whereof Ia'fx iny signature in a nut, a forked key, and a plate or Washer, presence of two Witnesses. the plate or Washer and the nut being` provided with grooves, so that when the key is driven CHARLES E' BELDING 5 into position its forked ends will be expanded around the sides of the bolt, substantially as shown.

v W'itnesses:

S. L. CRIssINGER, WV. C. LEWIs. 

